Flushing cistern



. Sept. 9, 1924.-

1,508,098 F. HASTRICH FLUSHING CISTERN Filed Oct. 22. 1923 Inven%o I Hast L'ch/ Patented Sept. 9, 1924.

UNITED STATES 1,508,098 PATENT OFFICE.

FERDINAND HASTRIGH, or cAMPnnDowN, NEAR SYDNEY, NEW scorn WALES,

, AUSTRALIA.

To all whomit may concern.

Be it known that I, FERDINAND HAsTRroH, subject of the King of Great Britain, residing at 1 10 Parramatta Road, Camperdown, near Sydney, Jew South Wales. Australia, have invented new and useful Improvements .in Flushing Cisterns, of which the following is a specification.

I This invention relates to semi-automatic flushing cisterns of the type ordinarily used in connection with sanitary basins.

In flushing cisterns according to the present invention, a float is carried on a trip lever which is fulcrumed on a counterweighted pull lever, which is in turn fulcrumed intermediate its ends on a fixed bracket. The trip lever is armed with latch finger which is engageable with a staple lug on the fixed bracket. and its movement about its fulcrum is limited by stops which at either extreme of its permitted range of movement engage the counterweighted pull lever. The pull lever is fitted with a cam which'controls the service valve through which the cistern is charged with water. 7

Normally the cistern is empty. When the pull lever is thrown by chain pull, its outer end is raised and the latch on the trip lever is thereby lifted to and engaged with the staple lug. In this movement the flush valve, which is pendent from the pull lever, is dropped onto its seat,.and the service valve is opened by the cam; and the pull lever is held by the latch of the trip lever until released by another action. Water now flows into the cistern. lVhen normal charge level is reached the float is lifted by the water, with the resultthat the latch is disengaged from the staple and the pull lever is no longer held. The counterweight then operates to reverse the pull lever, and in this reversing movement the flush valve is lifted and the service valve is permitted to close.

In the accompanying drawings Fig. 1 is a sectional elevational view of a cistern according to the present invention;

Fig. 2 is a vertical cross section on'the plane 2-2 Fig. 1; and

Fig. 3 is a fragmentary sectional view showing an alternative method of mounting the cistern chamber on the carrier bracket.

FLUSHING CISTERN'.

Application filed October 22, 1923. Serial No. 670,147.

The cistern chamber 10 is supported on a metal bracket 11 which is adapted to be spiked to a wall. Th bottom ends of this bracket are upturned as shown at 12 and carry bearers 13. The two bearers 13, one on either leg of the frame 11, together form a cradle to carry the cistern chamber 10. This chamber is preferably constructed of earthenware or concrete, but may be of sheet metal. It is formed with locating flanges 14 which set on either side of the bearers 13, or alternatively is grooved as shown at 15 (Fig. 3) across the bottom to receive the bearers 13.

The chamber 10 is fitted with a flush valve comprising a throat seating 16 secured in any desired manner in an aperture formed in. the bottom of a sump cavity 17 to connect the cistern to the flush pipe 18. 19 is a drop valve with guide fingers arranged for bringing it to centre in the seating piece 16.

20 is a chain or flexible wire by which the flush valve 19 is connected to the pull end of the pull lever 21. 22 is the pull chain. 23 is a counterweight on the back end of the pull lever 21. 24 is a cam shaped lug secured to the lever 21, and 25 is a fulcrum pin passing through the cam lug 2 1 and through the lugs 26 which depend from either side of the water service valve housing 27. 28 is a bracket on the housing 27. and 29 a staplelug ofl'set on the end of said bracket. 30 is the charging pipe which is in connection with the easing 27. 31 is a screwed-on collar connection into which the top end of the valve casing 27 is screwed. 32 being the service pipe which is screwed into the top end of the collar 31. The collar 31 is mounted by a bracket 33 on the wall frame 11. The whole of the mechanical fitting is therefore quite independent of the cistern chamber mounting.

A trip lever 35 is pivotally mounted at 36 on the outer end of the pull lever 21. 37 is a hell or other form of float, preferably a hemispherical float as shown. The back end of the trip lever 35 is armed with a latch 37 which in the pulled position of the lever 21, the cistern being empty, is engageable with the staple 29 on the bracket 28. The nosing of the latch 37 is such that in the rising movement it trips readily over the staple 29 and engages with its top face.

38 and'89 are stops on the arm 35 engageable respectively it h the underside and the top" side 01E the lever 21 to limitthe range of movement of the trip lever 35 on the pin v 36 relatively to the pull lever 21.

In idle position the counterweight 23 is down and the float 37 hangs below water the flush valve 19- is open.

level in the cistern chamber 10, :andthe latch 37 is not engaged with the staple 29. In this position the cam 24 holds the service valve contained in the casing 27 closed, so'=that water does not enter the cistern through'thefeed pipe 30. During this time When the pull chaini22 is operated, the lever'Ql is tipped untilthe latch 87 is engaged with the staple 29, as shown in Fig. 1;"Inthis lifting movement the flush valve 19; is dropped on to its seat; and the service valve in'the casing 27 is'allowed to open ,consequent on therelease 5 movement of the cam' 24. The cistern then begins to fill. Asit line the Water acting on the float 37 ultimately causes ityv'vhen the appropriate levelhas been reached, to tip thetrip lever and release the latch 37 from the staple 29.

Thereupon the counter-weight '23 acts to drop-thelever Ql-till'it contacts with the stop39' on the trip lever It is, however, prevented by the buoyancy of the 5 float-'37 from falling sufiiciently far to cause the-'ca-m 2 L towfully close the service valve in the housing 29. WVhen the lever 21 drops it pullson the chain 20 and' lifts the flush valve -19. "The -flush then discharges in the ,usual way through the fully opened valve 19 and the pipe 18, and the water level in the-cistern thus falling'allows the float 37 and'the'lever '21=to come to the-low posi-' tion and completely closet-he service valve init'heho-using 29. This-gradual closing of the' -service valve eliminates water hamwefi ct whichis found when the service valveis closed suddenly; lOwingto the operation of the cam device for slowly closingthe service vvalve, that valvev'may be ,gnade much larger in diameter than is usual with inlet valves wh ch are operated directly by the-lever movements, with; the resjstltrthat noise in charging the cistern is minimized. The parts remain in the position to which they have thus come until the chain is-again pulled. c

What Iclaim as my invention and desire to secure by Letters Patent is V .1. In a fiush-ing cisterma service valve, a flush release valve, a pull lever, a camshaped lug carrie'dby'sai'd lever and pivot; ally mounted on and adapted to operate-said service valve, anopera-t-ing member carried by-one' end of saidlever, means connecting; said end of the lever With the fiushfrelea se valve, a counterweight[carried by thefop 1 characterized by the provision of stop members on the trip lever coacting with the pull'leverwhereby tolimit the relative swinging movement of the levers and prevent the pull lever from fallingto itslowermost "position coincident with the *disen gagement of the latch'fromthelug; I

In testimony whereof I have signed my name to this specification.

*FEBDINANDHASTRICH'; 

